- Added error case that enforces whitespace in between directive tokens.
- Upon encountering invalid directive tokens/states we bail out of parsing and log an appropriate error.
- Raised directive parse errors to the IR layer. This is slightly hacky given the parsers limitations; we swap out the error sink temporarily to capture all directive parser errors and then shove the errors collected onto the directives chunk generator.
- Added a `MalformedDiretiveIRNode` and corresponding pass to represent directives that are in an invalid state. Chose to not take the path of using the default `DirectiveIRNode.Diagnostics` member to enable users who are extending directives to only ever have to work with "valid" directives. If they want to work with malformed directives they can search the IR document for their malformed counterpart and handle it separately.
- Updated existing test expectations
- Removed some existing tests that were no longer valid (we don't call into user code if a directive is malformed).
#1173
- This moves ParserContext closer to operating on a RazorSourceDocument and exposes it at the parsing layer.
- Was not able to replace the `ITextDocument` property on `ParserContext` due to its current wiring. Our tokenizers rely on a single reader that iterates over the document and take turns tokenizing characters from that reader. The reader that the tokenizers pull from is also highly coupled with the parsers implementations; they end up moving the readers pointer frequently.